The first and most unavoidable time you’ll see Metro in a given Windows 8 session is upon start-up. There’s no way to disable Metro, but you can force the desktop mode application to load as soon as you log in, effectively covering over Metro, before it even has a chance to draw. Here’s how.

oh god...'before it can..." (rear it's ugly head). thank you MS, for herding us toward cloud/empty as a fart computing...
to address the comment by 'zipzaprap' (a premium degenerate): a quote from our own member, 'godless'